The present study aims to investigate the gastroprotective effect of Brucea javanica oil emulsion(BJOE) in animals. Gastroprotective potential of BJOE was studied on absolute ethanol,aspirin, reserpine and restraint p...The present study aims to investigate the gastroprotective effect of Brucea javanica oil emulsion(BJOE) in animals. Gastroprotective potential of BJOE was studied on absolute ethanol,aspirin, reserpine and restraint plus water immersion-induced gastric ulcers in mice as well as glacial acetic acid(GAA) and pyloric ligation(PL)-induced gastric ulcers in rats. Except for ulcer scores, total acidity as well as pepsin activity as for the PL-induced gastric ulcer model and ulcer incidence as for the GAA-induced gastric ulcer model were also determined. Histopathological evaluation as for aspirin, reserpine, PL-induced models was conducted. Results showed that BJOE significantly(P < 0.05) reduced ulcer index in the mouse and rat models in a dose-dependent manner. It had significant(P < 0.05) suppressive effect on total activity of gastric juice as well in PL-induced model. Histopathological examination for the stomach samples confirmed the findings in the aspirin, reserpine or PLinduced gastric lesion models, which showed relatively complete mucosa structure and less inflammation. It is concluded that BJOE could be effective on gastric ulcer in rodents and its gastroprotective activity might be related to antioxidant, anti-inflammatory ability and promote gastric mucus secreted. The results may provide beneficial basis for increasing BJOE's clinical indication in future.展开更多
To investigate the effects of 4-methyl-2-{[4-(toluene-4-sulfonyl)-thiomorpholine-3-carbonyl]-amino}-pentanoic acid isopropyl ester(HD5-6)against cerebral ischemia in rodents,the models with global and focal ischemia w...To investigate the effects of 4-methyl-2-{[4-(toluene-4-sulfonyl)-thiomorpholine-3-carbonyl]-amino}-pentanoic acid isopropyl ester(HD5-6)against cerebral ischemia in rodents,the models with global and focal ischemia were induced by bilateral common carotid artery occlusion plus hypotension(BCAOH)and permanent cerebral artery occlusion(p-MCAO)in mice(n=10–12 per group in BCAOH;n=8 per group in p-MCAO)and rats(n=10-11 in each group).HD5-6 prolonged lifetime and improved neurological function.Neurological deficits score in HD5-6(30 mg/kg)decreased significantly.Malonaldehyde(MDA)in HD5-6-treated mice with ischemia considerably dropped.The infarction volume of the HD5-6-treated rats with MCAO-induced ischemia decreased significantly in the high dose group(P<0.05,i.g.and P<0.01,i.v.).Immunohistochemistry showed that Brain derived neurotrophic factor(BDNF)in the ipsilateral hemisphere increased and Vascular endothelial growth factor(VEGF)decreased with HD5-6 treatment.HD5-6 has protective effects against experimental cerebral ischemia in rodents and the action mechanism may involve anti-oxidation and neurogenesis.展开更多
文摘The present study aims to investigate the gastroprotective effect of Brucea javanica oil emulsion(BJOE) in animals. Gastroprotective potential of BJOE was studied on absolute ethanol,aspirin, reserpine and restraint plus water immersion-induced gastric ulcers in mice as well as glacial acetic acid(GAA) and pyloric ligation(PL)-induced gastric ulcers in rats. Except for ulcer scores, total acidity as well as pepsin activity as for the PL-induced gastric ulcer model and ulcer incidence as for the GAA-induced gastric ulcer model were also determined. Histopathological evaluation as for aspirin, reserpine, PL-induced models was conducted. Results showed that BJOE significantly(P < 0.05) reduced ulcer index in the mouse and rat models in a dose-dependent manner. It had significant(P < 0.05) suppressive effect on total activity of gastric juice as well in PL-induced model. Histopathological examination for the stomach samples confirmed the findings in the aspirin, reserpine or PLinduced gastric lesion models, which showed relatively complete mucosa structure and less inflammation. It is concluded that BJOE could be effective on gastric ulcer in rodents and its gastroprotective activity might be related to antioxidant, anti-inflammatory ability and promote gastric mucus secreted. The results may provide beneficial basis for increasing BJOE's clinical indication in future.
基金This work is supported by a grant from the national science and technology major project,a candidate drug for neurodegenerative diseases targeting FKBPs,(2009ZX09103-024).
文摘To investigate the effects of 4-methyl-2-{[4-(toluene-4-sulfonyl)-thiomorpholine-3-carbonyl]-amino}-pentanoic acid isopropyl ester(HD5-6)against cerebral ischemia in rodents,the models with global and focal ischemia were induced by bilateral common carotid artery occlusion plus hypotension(BCAOH)and permanent cerebral artery occlusion(p-MCAO)in mice(n=10–12 per group in BCAOH;n=8 per group in p-MCAO)and rats(n=10-11 in each group).HD5-6 prolonged lifetime and improved neurological function.Neurological deficits score in HD5-6(30 mg/kg)decreased significantly.Malonaldehyde(MDA)in HD5-6-treated mice with ischemia considerably dropped.The infarction volume of the HD5-6-treated rats with MCAO-induced ischemia decreased significantly in the high dose group(P<0.05,i.g.and P<0.01,i.v.).Immunohistochemistry showed that Brain derived neurotrophic factor(BDNF)in the ipsilateral hemisphere increased and Vascular endothelial growth factor(VEGF)decreased with HD5-6 treatment.HD5-6 has protective effects against experimental cerebral ischemia in rodents and the action mechanism may involve anti-oxidation and neurogenesis.